/* Speak Freely for Unix definitions */ #define RTP_SUPPORT #define PUSH_TO_TALK #define FACE_SET_GEOMETRY #if defined(sun) && !defined(Solaris) #define BSD_like #endif #ifdef __FreeBSD__ #define BSD_like #endif #ifdef sgi #define _BSD_SIGNALS #endif #include #include #include #include #include #include #include #ifdef PUSH_TO_TALK #include #endif #include #include #include #ifdef BSD_like #include #endif #ifdef Solaris #include #endif #ifdef sgi #include #include #endif #include #include #include #include #include #include #ifdef LINUX_FPU_FIX #include #endif #define NOLONGLONG #include "types.h" #ifndef NOCRYPTO #define CRYPTO #endif #ifdef CRYPTO #include "blowfish.h" #include "libdes/des.h" #endif #include "ulaw2linear.h" #include "adpcm/adpcm-u.h" #include "lpc/lpc.h" #include "gsm/inc/gsm.h" #include "md5/md5.h" #include "rtp.h" #include "rtpacket.h" #include "audio_descr.h" #include "common.h" #define TINY_PACKETS 512 /* Ideal tiny packet size */ #define FACEDIR "/tmp/" /* Directory where you'd like to keep face files */ #define BUFL 8000 #define LONG long /* AUDIO_DEVICE_FILE enables code for platforms which support audio via one or more device files, such as /dev/audio. Platforms which do not implement audio in this manner, for example SGI and Hewlett-Packard Unix workstations, should #undef AUDIO_DEVICE_FILE in the lines below. */ #define AUDIO_DEVICE_FILE /* Platform-specific undefines for non-device-file audio. */ #ifdef sgi #undef AUDIO_DEVICE_FILE #endif #ifdef HEWLETT_PACKARD #undef AUDIO_DEVICE_FILE #endif /* Binary block and signal functions for fanatic ex-BSD platforms. */ #ifdef Solaris #define bcmp(a, b, n) memcmp(a, b, n) #define bcopy(a, b, n) memmove(b, a, n) #define bzero(a, n) memset(a, 0, n) typedef void (*signalFUNC)(int); #define signal(a, b) sigset(a, (signalFUNC) b) #define signalFUNCreturn (signalFUNC) #endif #ifndef signalFUNCreturn #define signalFUNCreturn #endif /* Auto-configure multicast support */ #ifdef IP_ADD_MEMBERSHIP #define MULTICAST #endif #define LPC_FRAME_SIZE 160 /* Frame size for LPC compression */ struct soundbuf { LONG compression; char sendinghost[16]; struct { LONG buffer_len; char buffer_val[BUFL]; } buffer; }; typedef struct soundbuf soundbuf; struct sbhead { LONG compression; char sendinghost[16]; struct { LONG buffer_len; char buffer_val[16]; } buffer; }; typedef struct sbhead sbhead; #define roSeq(s) (*((unsigned char *) &((s)->buffer.buffer_len))) #ifndef TRUE #define TRUE 1 #endif #ifndef FALSE #define FALSE 0 #endif #define V (void) #define ELEMENTS(array) (sizeof(array)/sizeof((array)[0])) /* Packet mode flags. */ #define fComp2X 1 /* Simple 2 to 1 compression */ #define fDebug 2 /* Debug mode */ #define fSetDest 4 /* Set sound output destination */ #define fDestSpkr 0 /* Destination: speaker */ #define fDestJack 8 /* Destination: audio output jack */ #define fLoopBack 16 /* Loopback packets for testing */ #define fCompGSM 32 /* GSM compression */ #define fEncDES 64 /* DES encrypted */ #define fEncOTP 128 /* One-time pad encrypted */ #define fEncIDEA 256 /* IDEA encrypted */ #define fCompADPCM 512 /* ADPCM compressed */ #define fEncPGP 1024 /* PGP encrypted */ #define fKeyPGP 2048 /* Buffer contains PGP-encrypted session key */ #define fCompLPC 4096 /* LPC compressed */ #define fFaceData 8192 /* Request/reply for face data */ #define fFaceOffer 16384 /* Offer face image to remote host */ #define fCompVOX 0x10000 /* VOX compressed */ #define fCompLPC10 0x20000 /* LPC-10 compressed */ #define fCompRobust 0x40000 /* Robust packet replication ? */ #define fEncBF 0x80000 /* Blowfish encrypted */ #define fProtocol 0x40000000 /* Speak Freely protocol flag */ /* Special definitions for face data packets (which have fFaceData set). */ #define faceRequest 1 /* Face data request */ #define faceReply 2 /* Face data reply */ #define faceLess 4 /* No face available */ /* Mask to extract packet modes. */ #define fCompressionModes (fComp2X | fCompGSM | fCompADPCM | fCompLPC) #define isEncrypted(x) (((x) & (fEncDES | fEncOTP | fEncOTP | fEncPGP)) != 0) /* Special definitions for half-duplex control packets. */ #define fHalfDuplex 0x10000000 /* Local half-duplex transition */ #ifdef HALF_DUPLEX #define fHalfDuplexMute 1 /* Mute audio output to allow input */ #define fHalfDuplexResume 2 /* Resume audio output */ #endif /* Test if a packet actually contains sound. */ #define isSoundPacket(c) (((c) & (fFaceData | fKeyPGP | fHalfDuplex)) == 0) /* Open connection state. */ struct connection { struct connection *con_next; /* Next connection */ struct in_addr con_addr; /* Host Internet address */ char pgpkey[17]; /* PGP key for connection */ char keymd5[16]; /* Digest of key file */ long con_timeout; /* Connection timeout */ long con_busy; /* Connection busy timeout */ char con_hostname[264]; /* Host name */ long con_compmodes; /* Last compression modes */ short con_protocol; /* Transmission protocol */ int con_reply_current; /* Reply file current ? */ #ifndef CRYPTO int con_crypt_warning; /* Encryption warning sent ? */ #endif char con_session[4]; /* VAT/RTP session identifier */ lpcstate_t lpcc; /* LPC decoder state */ int con_rseq; /* Robust mode sequence number */ char con_uname[4096]; /* User name */ char con_email[256]; /* User E-mail address, if known */ char face_filename[300]; /* Face temporary file name */ FILE *face_file; /* Face file, when open */ pid_t face_viewer; /* Face file viewer PID */ int face_stat; /* Face retrieval status */ long face_address; /* Address of current block request */ int face_retry; /* Timeout retry count */ int face_timeout; /* Timeout interval */ }; /* Face retrieval status values for face_stat. */ #define FSinit 0 /* Nothing requested yet */ #define FSrequest 1 /* Request sent, awaiting reply */ #define FSreply 2 /* Reply received, ready for next request */ #define FScomplete 3 /* Face file reception complete */ #define FSabandoned 4 /* Face file retrieval abandoned */ /* Face retrieval configuration parameters. */ #define FaceFetchInterval 250000 /* Interval between block requests, usec */ /* Resend block request after this time */ #define FaceTimeout (FaceFetchInterval * 20) #define FaceMaxRetries 10 /* Maximum retries to obtain face data */ /* Protocol types for con_protocol. */ #define PROTOCOL_SPEAKFREE 0 /* Speak Freely protocol */ #define PROTOCOL_VAT 1 /* VAT protocol */ #define PROTOCOL_RTP 2 /* RTP protocol */ #define PROTOCOL_VATRTP_CRYPT 3 /* Probably encrypted VAT or RTP message */ #define PROTOCOL_UNKNOWN 4 /* No evidence as to protocol yet */ /* RTCP APP packet identifiers. */ #define RTCP_APP_TEXT_CHAT "SFtc" /* Text chat message */ /* Look Who's Listening parameters. */ #define LWL_MAX_SITES 5 /* Maximum LWL servers a user can publish on */ #ifdef MYDOMAIN #define getdomainname(s, n) strncpy(s, MYDOMAIN, n) #endif